[Windows] Make resolver_component_tests_runner_invoker run with Bazel on Windows (#34107)

Local Bazel invocation succeeds:

```
C:\Users\yijiem\projects\grpc>bazel --output_base=C:\bazel2 test --dynamic_mode=off --verbose_failures //test/cpp/naming:resolver_component_tests_runner_invoker@poller=epoll1
INFO: Analyzed target //test/cpp/naming:resolver_component_tests_runner_invoker@poller=epoll1 (0 packages loaded, 0 targets configured).
INFO: Found 1 test target...
Target //test/cpp/naming:resolver_component_tests_runner_invoker@poller=epoll1 up-to-date:
  bazel-bin/test/cpp/naming/resolver_component_tests_runner_invoker@poller=epoll1.exe
INFO: Elapsed time: 199.262s, Critical Path: 193.48s
INFO: 2 processes: 1 internal, 1 local.
INFO: Build completed successfully, 2 total actions
//test/cpp/naming:resolver_component_tests_runner_invoker@poller=epoll1  PASSED in 193.4s

Executed 1 out of 1 test: 1 test passes.
```

The local invocation of RBE failed with linker error `LINK : error
LNK2001: unresolved external symbol mainCRTStartup`, but that does not
limited to this target:
https://gist.github.com/yijiem/2c6cbd9a31209a6de8fd711afbf2b479.

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1 files changed, 1 insertions, 1 deletions

diff --git a/templates/test/cpp/naming/resolver_component_tests_defs.include b/templates/test/cpp/naming/resolver_component_tests_defs.include
index 6877f6a5b0..019686b2b6 100644
--- a/templates/test/cpp/naming/resolver_component_tests_defs.include
+++ b/templates/test/cpp/naming/resolver_component_tests_defs.include
@@ -47,7 +47,7 @@ def test_runner_log(msg):
   sys.stderr.write('\n%s: %s\n' % (__file__, msg))
 
 def python_args(arg_list):
-  if platform.system() == 'Windows':
+  if platform.system() == 'Windows' and arg_list[0].endswith('.py'):
     return [sys.executable] + arg_list
   return arg_list